The present invention provides an inner buffer layer of a riding helmet and a helmet structure. The inner buffer layer of the riding helmet comprises an inner buffer layer; the inner buffer layer comprises a skeleton body made of foam buffer materials; buffer bodies made of foam buffer materials are embedded in hollow grooves of the skeleton body; and the surfaces of the buffer bodies are provided with buffer layers. The buffer layers are a plurality of buffer bulges fixedly connected to the surfaces of the buffer bodies. The installed skeleton body ensures the structural strength of the inner buffer layer. Moreover, the plurality of buffer bulges installed can make the helmet match with a fabric inner cushion body in the wearing process, which can effectively increase the frictional force and effectively prevent the helmet from falling off the head of a wearer at the moment of accident impact.

A protective football helmet is provided having a one-piece molded shell with an impact attenuation system. This system includes an impact attenuation member formed in an extent of the front shell portion by removing material from the front portion. The impact attenuation member is purposely engineered to change how the front portion responds to an impact force applied substantially normal to the front portion as compared to how other portions of the shell respond to that impact force. In one version, the impact attenuation member is a cantilevered segment formed in the front portion of the shell.

A helmet for work or sports, including a structure having a substantially convex outer surface and a substantially concave inner surface; a protective body of polystyrene, having a first portion engageable to the inner surface and a second portion having a concavity for receiving the head of a user. The protective body includes: a base element made up of a first material for shock and/or impacts absorption having a predetermined first density value, the base element having a concave surface defining the concavity and a housing cavity facing away with respect to the concave surface; a protective insert made of a second material for shock and/or impact absorption having a second predetermined different density value, preferably lower, than the first density value of the first material, the protective insert being at least partially insertable in the housing cavity.

The present invention provides a sawdust helmet and a manufacturing method. The sawdust helmet comprises an outer housing; a buffer body containing sawdust is installed at the inner side of the outer housing; the buffer body is integrally formed, and the size of the buffer body is adapted with the size of the outer housing; a fabric inner cushion body is padded at the inner side of the buffer body; and a helmet belt is fixedly installed at the bottom of the outer housing. The buffer body is composed of a sawdust layer and a foam material layer. The sawdust layer is composed of cork chips or non-cork chips. The buffer body is composed of the sawdust layer and the foam material layer, and the decorative pattern formed by the sawdust can increase the beauty of the helmet.

A double-shell helmet is disclosed. The double-shell helmet includes an outer shell, an impact absorbing material layer affixed to the outer shell on a first side of the impact absorbing material layer, an inner shell affixed to the impact absorbing material layer on a second side of the impact absorbing material layer opposite the first side of the impact absorbing material layer, and a foam layer affixed to the inner shell.

A protective helmet to be worn by a player engaged in a sport comprises a flexible outer shell and a multi-layer liner assembly disposed within the outer shell. The multi-layer liner assembly includes an inner-layer, a middle-layer and an outer-layer, and permits relative rotational movement between said layers when the helmet is worn by the player and receives an impact. The inner-layer is made from a first material with a first density and is mechanically coupled to the outer-layer without adhesive. The outer-layer is made from a second material with a second density that is greater than the first density of the inner-layer. The middle-layer is made from a third material that has a third density that is greater than the first density. The outer-layer also has a thickness that is greater than a thickness of the inner-layer and varies between a front region of the outer-layer and a crown region of the outer-layer.

A helmet includes an outer shell, a securing mechanism (e.g., a strap and belt system) for securing the shell to a user's head, and an impact-absorbing layer (e.g., expanded polystyrene (EPS), expanded polypropylene (EPP), or other suitable material) positioned on an inner surface of the outer shell. The impact-absorbing layer includes a resilient material and has an inner surface and a plurality of holes each having a hexagonal cross-sectional shape. The hexagonal holes may extend less than all the way through the impact-absorbing layer. A section of the impact-absorbing layer can have holes with a combined cross-sectional area that is at least 50% of a cross-sectional area of the inner surface of the impact-absorbing layer. the plurality of holes can define a honeycomb structure having cell walls having cell wall thicknesses, and the plurality of holes can have major diameters that are larger than the cell wall thickness of the cell walls.

A protective helmet to be worn by a player engaged in a sport comprises a flexible outer shell and a multi-layer liner assembly disposed within the outer shell. The multi-layer liner assembly includes an inner-layer, a middle-layer and an outer-layer, and permits relative rotational movement between said layers when the helmet is worn by the player and receives an impact. The inner-layer is made from a first material with a first density and is mechanically coupled to the outer-layer without adhesive. The outer-layer is made from a second material with a second density that is greater than the first density of the inner-layer. The middle-layer is made from a third material that has a third density that is greater than the first density. The outer-layer also has a thickness that is greater than a thickness of the inner-layer and varies between a front region of the outer-layer and a crown region of the outer-layer.

The present disclosure relates to flexible energy absorbing systems and body armor, helmets and protective garments incorporating flexible energy absorbing systems. A flexible energy absorbing system may comprise a first plurality of cells having a first re-entrant geometry and a second plurality of cells having a second, different geometry. The first plurality of cells and the second plurality of cells may comprise an elastomeric material.

A protective helmet having a liner assembly received in an outer shell and connected to the outer shell, with front, rear, side and top portions each including at least one zone where the liner assembly includes a plurality of overlapping layers, each of the layers being made from one of first, second, third and fourth materials, where the first material has a greater density and/or hardness than that of the second, third and fourth materials, the second material has a greater density and/or hardness than that of the third and fourth materials, and the third material has a greater density and/or hardness than that of the fourth material, and wherein the liner assembly includes one or more particular zones set forth in Table 3 or 4.